Uncedo kunye neeminerali e North America

Ilizwekazi North America ithatha indawo enkulu. Ngobukhulu oko yesithathu ehlabathini. Ngenxa -mphandle kunye nezibonelelo zendalo of North America luphawulwa azifani. Oku kuza kuxoxwa ngaphezulu ...

indawo okuyo

Ilizwekazi ibekwe kwi zifaka esemantla nasentshona zomhlaba. Kokuhlanjwa yi-Pacific kunye Atlantic kunye Arctic Oceans, thaca ezahlukeneyo zokupaka kunye neelwandle. Ukusuka Umzantsi Melika, njengezwekazi esahlula Isthmus Panama, entshona naseAsiya, oko wahlulwe wethu Strait.

Inxalenye lwezwekazi Intshona Melika ngummandla million 20,36 square metres. km. Phakathi kwiziqithi yezwe inxalenye eGreenland, kwiziqithi zeCaribbean, Canadian Arctic Archipelago, kunye nabanye. Ukususela ubude kumntla-emazantsi ilizwekazi kweekhilomitha 7326, ukusuka entshonalanga ukuya empumalanga - 4700 leekhilomitha.

indawo yezwe phantse kuzo zonke iindawo zokuma. I-United States naseKhanada, kunye eBahamas, Bermuda kwaye Greenland zenza kummandla North American. Emazantsi, nto leyo ibekwe le ndawo, kuba yinxalenye yommandla Central America.

ukukhululeka

Uncedo kunye neeminerali e North America bagwayimbile iyantlukwano. Umphezulu yelizwekazi imelwe ezingafani - kukho iintaba kunye anamandla, amathafa neenduli. Uninzi ummandla ekuhlala amathafa kumacala omabini emideni yabo ezintabeni. Ukuphakama kumathafa kunokwahluka phakathi kweemitha ezilikhulu ambalwa, nto leyo eyenza kube kakhulu siziinduli sezwe.

Kwinxalenye kumntla Laurentian inkangala yi erhangqwe kwi kwikhonkco ngasezantsi namachibi amakhulu. Effect glacier ngokuxhomekeka mpuluswa rocks emile neenduli, ukuyilwa emigodini. Ukuya ezantsi na zazihamba Valley Central, Ithe tye emva kwabo - entilini Mississippi.

Kwinxalenye yasentshona Great Amathafa zezi - eentaba ye Cordillera. Bafikelela ukuya ku-1500 ubude. Cordillera zezona izowuni kakhulu emhlambini, ukuphakama iphezulu - lo encotsheni yentaba McKinley kwi mitha 6193. Akha inxalenye esempuma Rocky Mountains (4,200 m) kunye Cascade kwiiNtaba.

Empumalanga amalungiselelo Appalachian zimelwe iinduli medium phezulu kwimiboniso ezahlukeneyo ukuya ku-2000 leemitha. Xa ngasezantsi kwilizwekazi Mexican nethafa Atlantic lonxweme, esingadlulanga kumakhulu amabini eemitha. Ekude kufuphi nonxweme, zamisa nemivalo, namathambeka, amachweba, Spits.

isakhiwo geotectonic

Kwilizwekazi North American liqonga lesiseko, uninzi lwazo ethatha Canadian Shield, eqalisiweyo ekuqaleni Precambrian. Iikona zayo akaqukwanga, kukho iidipozithi welothe, nickel, igolide, nezentsimbi ekrwada ayibe kunye nezinye izimbiwa e North America.

Zivela empumalanga Canadian Shield Appalachian ukudlulela. Kule zintaba isongiwe-block zavela iinkqubo kukwaphulwa. iindawo Out wajika ziye entilini, Iliwa ukumelana esishiyekileyo ngohlobo ukuphakama.

Kwinxalenye yasentshona zwekazi kummandla avareji Cordilleran ukusonga, akhiwa Ukuntlithwa komhlaba ziitectonic plates. Le nkqubo iyaqhubeka namhlanje. Le Cordilleras ukubunjwa zaphenjelelwa glacier. Ngoko ke, kulo mmandla ibekwe zombini izimbiwa sedimentary igneous e North America.

Great Amathafa ukwakweli kumda eqongeni kunye Cordillera. Bona zenziwe neetyuwa zaselwandle kunye nezelizwekazi. Enemvelaphi ezifanayo kunye Valley Central. Ematyeni wabo wasezantsi-mpuma ubuso karst, ukudala anzima nzulu - Indlovu Irholo. Amatye akheke ngentlenga kwakhiwa nezihlambo waseMexico.

Intshona Melika: leZimbiwa (ngokufutshane)

Isakhiwo nokwakheka Eyona nto ibaluleke kakhulu ukuze kwakhiwe kwezibonelelo ezithile kwezimbiwa. Ngenxa isakhiwo yayo ezizodwa, le kwezimbiwa Intshona Melika phantse kulo lonke izwekazi.

Xa indawo ikhaka ngezwe iidipozithi ezibalulekileyo ekrwada uranium kunye nesinyithi, molybdenum, nickel, ikopolo. Emathafeni elunxwemeni, kwakunye kwi Cordilleras kunye Alaska ukuba oovimba namafutha enziwe ngeefosili anqongophele. Apha geni izimbiwa ezifana ioli North American kunye negesi yendalo.

Kwimimandla engundoqo kunye misinga ezi needipozithi amalahle Appalachian. In Cordilleras kukho izimbiwa ezahlukeneyo sedimentary ukubona, ezifana negolide, nezentsimbi ekrwada zesinyithi non-ayoni, mercury. imali enkulu of phosphate zimi usingasiqithi ebizwa Florida.

Minerals Intshona Melika: itheyibhile

Kuba umbono ngcono sagqiba ukuba zonke iinkcukacha zaza zaboniswa ngendlela itafile, nto leyo ithiwe thaca apha ngasezantsi.

isiphelo

Ilizwekazi Intshona Melika ise kwi zifaka esemantla nasentshona le planethi. indawo yayo geographical, iimeko zendalo kunye nesakhiwo zejoloji negalelo ukuyilwa kwezibonelelo kwezimbiwa.

Le izimbiwa emikhulu Intshona Melika - ukuba ores metal non-ayoni, nematallicheskie esikrwada kunye namafutha enziwe ngeefosili anqongophele. Phakathi kwabo, igesi yendalo, i-oyile, amalahle, phosphate, uranium, ilothe, zinc, nickel, esikrwada nesilivere, negolide, platinum kunye nabanye.

Ngenxa inani elikhulu kunye neyantlukwano kwezibonelelo, amazwe amabini amakhulu kwi nemisinga unganikeza ngokwabo kwaye kuxhomekeka kwamanye amazwe.